> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dojima.foundation/llms.txt
> Use this file to discover all available pages before exploring further.

# How it Works

### Operator onboarding

<img src="https://mintcdn.com/dojimanetwork/C6QxP2Ciapx3egY_/images/operator-onboarding.webp?fit=max&auto=format&n=C6QxP2Ciapx3egY_&q=85&s=1a9ecb4edbd3269abc1af86d08ccf276" alt="image.png" width="2048" height="2297" data-path="images/operator-onboarding.webp" />

### **Steps to Onboard an Operator**:

1. **Staking \$DOJ Tokens**:
   * The operator stakes \$DOJ tokens using the `createOperator` functionality.
   * Once the stake is made, the operator is added to the **operator set** in the Hermes chain.
2. **Hosting Blockchain Nodes**:
   * After onboarding, operators host blockchain nodes of their choice.
   * These nodes are registered and managed through the **Operator Dashboard**.
3. **Node Updates**:
   * Whenever a new node is added or updated by an operator, the information is recorded on the Hermes chain via the dashboard.
4. **Crawler Node Tracking**:
   * Crawler nodes continuously monitor the Hermes chain for operator-related events, such as node changes or operator set updates.
   * These events are filtered and stored locally by the crawler nodes to ensure efficient data querying and synchronization.

### Crawler node fetching block data from operators

The below component diagram depicts how crawler nodes fetch data from operators.

<img src="https://mintcdn.com/dojimanetwork/C6QxP2Ciapx3egY_/images/Crawler.webp?fit=max&auto=format&n=C6QxP2Ciapx3egY_&q=85&s=c19cc28789ff6ee90470a6291667a3d0" alt="image.png" width="2048" height="1154" data-path="images/Crawler.webp" />

### **Data Fetching Process**:

1. **Pull-Based Mechanism**:
   * **Crawler nodes** operate on a pull-based mechanism, periodically querying the operators for the latest blockchain data.
2. **Hermes Pairing List**:
   * Every **200 blocks**, the Hermes chain publishes a **Pairing List** (PL).
   * This list assigns specific crawler nodes to operators, detailing which crawlers should query which operators for blockchain data.
3. **Data Requests**:
   * Based on the PL, crawler nodes fetch block and transaction data from the mapped operator's nodes.
   * This data is then processed by the crawlers to filter Dojima cross-chain transactions, which are sent to Hermes for further validation and processing.

### Pairing algorithm

(TBA)

### Compute units calculation

(TBA)